Year % 2001 54.91421 2002 54.27822 2003 56.78314 2004 56.92238 2005 57.00217 2006 52.25749 2007 49.246 2008 49.246 2009 49.246 2010 49.246 2011 50.2417 2012 50.2417 2013 50.2613 2014 49.04523 2015 35.31845 2016 34.82972 2017 47.03642 2018 45.66171 2019 40.23338 2020 40.23338 2021 38.97902